1318221476 has 48 divisors (see below), whose sum is σ = 2728555200. Its totient is φ = 549352320.

The previous prime is 1318221439. The next prime is 1318221481. The reversal of 1318221476 is 6741228131.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77495 + ... + 92961.

It is an arithmetic number, because the mean of its divisors is an integer number (56844900).

Almost surely, 2^1318221476 is an apocalyptic number.

It is an amenable number.

1318221476 is an abundant number, since it is smaller than the sum of its proper divisors (1410333724).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1318221476 is a wasteful number, since it uses less digits than its factorization.

1318221476 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15644 (or 15642 counting only the distinct ones).

The product of its digits is 16128, while the sum is 35.

The square root of 1318221476 is about 36307.3198680376. The cubic root of 1318221476 is about 1096.4684193504.

The spelling of 1318221476 in words is "one billion, three hundred eighteen million, two hundred twenty-one thousand, four hundred seventy-six".